CVE-2026-64386

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale free.

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)

CWE

CWE-415

Published

2026-07-25

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/100fb7c455fa86d248b8bd7bb9de757c192870b4
• https://git.kernel.org/stable/c/2a88561d66eb855813cf004a0abe648bbb17de5e
• https://git.kernel.org/stable/c/3c81dda84799f76b42aec598564316e2964440db
• https://git.kernel.org/stable/c/89234773e8348918111aa15f6922b58cf3843364
• https://git.kernel.org/stable/c/f1add4acb656f5a82806a1ab0e63fed3d8b1bfca

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